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Ira Lisetskai [31]
3 years ago
11

Help!

Mathematics
1 answer:
maria [59]3 years ago
5 0

Answer:

65 years old

Step-by-step explanation:

G . = grandma

d = grand daughter

g = 13d

g+1= 11(d+1) - -  distributive property

g + 1 = 11d+11

subtract  1 from both sides

g = 11d+10

substitute g = 13d into equation

13d = 11d+10

subtract 11d from both sides

2d = 10

divide both sides by 2

d = 5. the grandaughter is 5, and the grandma is currently 13 * the granddaughters age. 5*13 = 65. hope it helped

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